ASTROSAT CZTI

Data Quality Report

Orbit 20480

Creation date: 2024-06-27T18:15:52.627346
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_208T03_9000003026_20480cztM0_level2.evt modeM0/AS1A05_208T03_9000003026_20480cztM0_level2_quad_clean.evt
Size (bytes)565,185,60096,076,800
Size539.0 MB 91.6 MB
Events in quadrant A3,248,071641,578
Events in quadrant B3,547,527658,640
Events in quadrant C3,168,297629,536
Events in quadrant D6,736,139550,220

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135902
B0145182
C0133362
D0242135

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6147500.813405%
B6147570.927282%
C6147671.089963%
D6146120019.524894%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7467 6147 27 27 0.36% 0.44%
B 7467 6148 11 11 0.15% 0.18%
C 7467 6147 1 1 0.01% 0.02%
D 7466 6146 1143 1143 15.31% 18.60%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 5 16 192581 1226.16 784 768 156.4
A 9 143 20036 123.17 784 768 156.4
A 13 254 8494 49.39 784 768 156.4
B 0 189 147868 1003.23 794 777 146.6
B 0 190 58634 394.61 794 777 146.6
B 4 216 54747 368.1 794 777 146.6
C 14 238 119637 670.91 767 775 177.2
C 7 220 19269 104.39 767 775 177.2
C 0 207 12574 66.6 767 775 177.2
D 1 52 1642998 9368.92 716 696 175.3
D 7 38 1616648 9218.6 716 696 175.3
D 7 238 158097 897.93 716 696 175.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter